Notes


Practice Problems
Name the sets of numbers each belongs to.
\(\textbf{1)}\) \(\sqrt{5}\)
The answer is Real, Irrational
\(\textbf{2)}\) \(\frac{9}{16}\)
The answer is Real, Rational
\(\textbf{3)}\) \(-4\)
The answer is Real, Rational, Integers
Simplify.
\(\textbf{4)}\) \(3x+5y-2x+6y\)
The answer is \(x+11y\)
\(\textbf{5)}\) \(4(x-3)-2(x+5)\)
The answer is \(2x-22\)
State which property is being demonstrated.
\(\textbf{6)}\) \(3x+5=5+3x\)
Commutative Property of Addition
\(\textbf{7)}\) \(3x+(5+2x)=(3x+5)+2x\)
Associative Property of Addition
\(\textbf{8)}\) \((3 \cdot 4) \cdot x=3 \cdot (4 \cdot x)\)
Associative Property of Multiplication
\(\textbf{9)}\) \(2y \cdot 5=5 \cdot 2y\)
Commutative Property of multiplication
\(\textbf{10)}\) \(3(x+5)=3x+15\)
Distributive Property
\(\textbf{11)}\) \(5+0=5\)
Identity property of Addition
\(\textbf{12)}\) \(6 \cdot \frac{1}{6}=1\)
Inverse Property of Multiplication
\(\textbf{13)}\) \(8 \cdot 1=8\)
Identity property of Multiplication
\(\textbf{14)}\) \(7+(-7)=0\)
Inverse Property of Addition
\(\textbf{15)}\) \(3x+4=4+3x\)
Commutative Property of Addition
\(\textbf{16)}\) \((2+5)+x=2+(5+x)\)
Associative Property of Addition
\(\textbf{17)}\) \(7 \cdot (3 \cdot x)=(7 \cdot 3) \cdot x\)
Associative Property of Multiplication
\(\textbf{18)}\) \(x \cdot 2=2 \cdot x\)
Commutative Property of Multiplication
\(\textbf{19)}\) \(4(a+b)=4a+4b\)
Distributive Property
\(\textbf{20)}\) \(9+0=9\)
Identity Property of Addition
\(\textbf{21)}\) \(5 \cdot \frac{1}{5}=1\)
Inverse Property of Multiplication
\(\textbf{22)}\) \(6 \cdot 1=6\)
Identity Property of Multiplication
\(\textbf{23)}\) \(10+(-10)=0\)
Inverse Property of Addition
\(\textbf{24)}\) \(2x+3=3+2x\)
Commutative Property of Addition
See Related Pages\(\)